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/llllll1IllllIllllll/Mllll/IWMlll/lmnl'/ Patented Deo. 23, 1884.

N. W. WOODBRY.

SOLE SHAPING MACHINE.

QJ lmf' ujf/sigh (No Model.)

IIT/veiling lln'rrnn Smarts Parenti? time NATHANEL XV. VOODBURY, OFBEVERLY, ASSIGNOR TO SVAlN, FULLER Se C0., OF LYNN, MASSACHUSETTS.

SLlwSi'lAPING MACHENE.

DECIFICATION forming part of Letters Patent No. 309,67, dated December23, 1884.

Application filed October 13, lSS. (No model.)

To all whom t may concern: d

Beit known that I, NATHANIEL W. Woon- YBURY, ol" Beverly, in the countyot'Essex and State of Massachusetts, have invented certain new andusefulImprovements inSole-Shaping Machines, oi' which the following is aspecification.

My invention relates to improvements in machines in which shoesoles areshaped by 1o being placed on a last which is raised and forced againstan upper form, and more particularly to improvements in the machine forshaping the soles oi" boots and shoes shown and described in LettersPatent No. 230,187, i5 granted to J. B. Johnson, July 20, 1880. In thatmachine the slide and its last are raised by a treadle,and arotary cammounted on the cross-head of the toggles is then turned to clamp thesole 'lirmly between the lastand V2o the iixed forni.

One object of my invention is to dispense with the rotary cam and Vthesecond 1novement necessitated thereby; and to this end my inventionconsists in a tumbler-cani arranged between the toggles and the slide orlast-holder and operated by the treadle so as 1o raise the last andclamp the sole between ihe last and the form Another feature of myinvention relates to 3c the toggle-operating device, and it consists ina grooved cam mounted loosely on a rotating shaft, the cam being causedto revolve at the proper time to shift the pin ol` the togglejoint bymeans of a clutch splined on the shalt and connected to a tri p-treadle,by means of which the clutch may be thrown into or out of connectionwith the cam, as desired.

In the Johnson machine above mentioned the toggles are operated by meansol" dogs 4o provided with a lever, by means ot' which they can be throwninto the path ot' a rcciprocating notched bar, the operation requiringan extra movement of the attendant.

In the accompanying drawings, which illusa5 trate a Johnson sole-shapingmachine with my improvements embodied in the best way now known to me,Figure l is a front elevation showing the parts in two positions. Eig. 2is a section on line a: a' of Fig. l, and lfig. 3

5o is a section on line 1/ y of Fig. 1.

A is the form. 3 is the slide or last-holder oint-pih d'Z ofthe togglesenters.

mounted on the cross-head Z), and adjustable vertically thereon by meansof the screw b and the gears b2 b. D D are the toggle-levers. The upperone, D, carries a cross-head, d. rlhe lower one, D', is jointed to theframe at rl. A tumbler-cam, F, is jointed at one end to the cross-headd, and at its other end to a rod, It, connected to one end of thetreadlelever II. The cross-head b rests on the up- 6o per surface of thecam F, and is raised or lowered by turning the cam F by means of thelever lrl and rod 71. After the last reaches the height to which it canbe raised by the cam F, the toggles D D/ are brought into ac- 6 5 tion(to give the pressure requisite for setting the sole to shape) bythrowing the clutch I, splined on the revolving shalt t, into connectionwith the cam t, having an oblique groove,

ft2, formed in it, and into which groove the 7o The clutch l is thrownby means of a bell-crank lever, one arm, t, ofwhich is connected to theclutch.

A treadle, i", is provided with a hooked arm,

t, the hook of which engages the other arm, i, ol' the bell-crank lever.On depressing the treadle i" its hooked arm will engage with the arm t"of the bell-crank lever and cause the clutch to connect with and revolvethe cam F. The cam h, if constantly revolved, would im- 8o part areciprocating motion to the joint-pin ofthe toggles; but as the pressureon the sole should continue l'or some time, the toggles must remain intheir extended position during that time. liror this reason the hookedarm is thrown ol't from the arm ol" the bell-cranllever', immediatel yafter the clutch engages with the cam, by means ofatripper, zl.,comingin contact with a stop, rlhe friction between the clutch and the cam issufcient to 9o hold the clutch and cam together for half a revolution ofthe shaft r', during which the toggles are fully extended. As the shaftt' continues to revolve, the friction between the cam and clutch ceasesiust as the joint-pin would commence to move in the opposite di rection.At this moment the clutch is thrown oft" from the cam by means of aspring, fi. rlhe cani now ceases to revolve and remains in position toopen the toggles when the treadle fr" roo is again depressed. Byarranging the treadles one above the other, as shown, the entireoperation of raising` and forcing` the last against the form can beaccomplished by one movenient of the foot. To separate the platens, thetreadle i is first depressed to connect the clutch and cause the cam tomake a half-revolution,and thereby relieve the pressure of theY toggles,and the cain F is then turned back by raising the treadle-lever H.

I claim as my inventionl. In a sole-shaping machine7 the combination,With the last-holder and the toggle-1evers, of an interposedtumbler-camand the actuating means, substantially as described.

2. In a sole-sha inf` machine the combina tion, with the joint-pin ofthe toggle-levers, of 15 NATHL. W. VOODBURY.

Witnesses:

J. E. MAYNADIER, J oHN R. SNOW.

